Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Patent
1985-06-13
1987-02-17
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
360 75, G11B 503, G11B 2102
Patent
active
046444211
ABSTRACT:
A method and an apparatus for writing information on a magnetic disk by a single-gap magnetic head, wherein information is first written on a selected track and then the written information is partially erased along opposite edges of the written band. Alternatively, previously written information is first partially erased along one of opposite edges of the previously written band, then new information is written on the selected track, and the newly written information is partially erased along one of opposite edges of the newly written band remote from the above-indicated erased edge of the previously band information. In another alternative form, the previously written information is partially erased along opposite edges of the written band, and then new information is written on the selected track.
REFERENCES:
patent: 3860959 (1975-01-01), Hanson
patent: 4068268 (1978-01-01), Idemoto et al.
patent: 4164781 (1979-08-01), Brown
patent: 4290088 (1981-09-01), Beecrotr
patent: 4300174 (1981-11-01), Harman et al.
patent: 4516165 (1985-05-01), Cunningham et al.
Hibino Yoshihiko
Miwa Takahiro
Brother Kogyo Kabushiki Kaisha
Canney Vincent P.
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